D3619.diff
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	Index: head/sys/dev/cxgbe/tom/t4_ddp.c
	===================================================================
	--- head/sys/dev/cxgbe/tom/t4_ddp.c
	+++ head/sys/dev/cxgbe/tom/t4_ddp.c
	@@ -405,6 +405,19 @@
	}

	tp = intotcpcb(inp);
	+
	+ /*
	+ * For RX_DDP_COMPLETE, len will be zero and rcv_nxt is the
	+ * sequence number of the next byte to receive. The length of
	+ * the data received for this message must be computed by
	+ * comparing the new and old values of rcv_nxt.
	+ *
	+ * For RX_DATA_DDP, len might be non-zero, but it is only the
	+ * length of the most recent DMA. It does not include the
	+ * total length of the data received since the previous update
	+ * for this DDP buffer. rcv_nxt is the sequence number of the
	+ * first received byte from the most recent DMA.
	+ */
	len += be32toh(rcv_nxt) - tp->rcv_nxt;
	tp->rcv_nxt += len;
	tp->t_rcvtime = ticks;